<style>
  .block-markup {
    display: flex;
    justify-content: center;
  }

  .block-markup>svg {
    flex: 1;
  }
</style>
<script type="module"
  src="https://cdn.jsdelivr.net/npm/@myriaddreamin/typst.ts@v0.6.1-rc3/dist/esm/contrib/all-in-one-lite.bundle.js"
  id="typst"></script>
<script>
  document.getElementById('typst').addEventListener('load', function () {
    $typst.setCompilerInitOptions({
      getModule: () =>
        'https://cdn.jsdelivr.net/npm/@myriaddreamin/typst-ts-web-compiler@v0.6.1-rc3/pkg/typst_ts_web_compiler_bg.wasm',
    });
    $typst.setRendererInitOptions({
      getModule: () =>
        'https://cdn.jsdelivr.net/npm/@myriaddreamin/typst-ts-renderer@v0.6.1-rc3/pkg/typst_ts_renderer_bg.wasm',
    });
    // https://cdn.jsdelivr.net/npm/
    // http://localhost:20810/base/node_modules
    const fontSize = parseFloat(
      window.getComputedStyle(document.body).getPropertyValue('font-size'),
    );
    const textColor = nameToTypstRgba(
      window.getComputedStyle(document.body).getPropertyValue('color'),
    );

    function nameToTypstRgba(name) {
      var canvas = document.createElement('canvas');
      var context = canvas.getContext('2d');
      context.fillStyle = name;
      context.fillRect(0, 0, 1, 1);
      const [r, g, b, a] = context.getImageData(0, 0, 1, 1).data;
      const aRatio = Math.min(a / 255, 1);
      return `color.rgb(${r}, ${g}, ${b}, ${aRatio} * 100%)`;
    }

    function renderMarkup(content, isBlock) {
      const y = isBlock ? '0.5em' : '0pt';
      let mainContent = `#set page(height: auto, width: auto, margin: (y: ${y}, rest: 0pt)); #set text(size: ${fontSize}pt, fill: ${textColor}); #show math.equation: box;\n${content}`;
      return $typst.svg({ mainContent }).then(
        svg => svg,
        err => {
          console.error(err);
        },
      );
    }

    function createElem(content, isBlock) {
      const dom_parser = new DOMParser();
      const toInsert = isBlock
        ? `<p class="block-markup">${content}</p>`
        : `<span class="inline-markup">${content}</span>`;
      const svg_document = dom_parser.parseFromString(toInsert, 'text/html');
      return svg_document.querySelector(isBlock ? 'p.block-markup' : 'span.inline-markup');
    }

    document.querySelectorAll('p').forEach(p => {
      if (!(p.textContent.startsWith('$ ') && p.textContent.endsWith(' $'))) {
        return;
      }
      renderMarkup(p.textContent, true).then(svg => {
        p.style.display = 'none';
        p.style.marginTop = '-40px';

        p.parentNode.insertBefore(createElem(svg, true), p.nextSibling);
      });
    });
    document.querySelectorAll('p code').forEach(p => {
      if (!(p.textContent.startsWith('{') && p.textContent.endsWith('}'))) {
        return;
      }
      renderMarkup(p.textContent.slice(1, -1), false).then(svg => {
        p.style.display = 'none';
        p.style.marginTop = '-40px';

        p.parentNode.insertBefore(createElem(svg, false), p.nextSibling);
      });
    });
    function skipExampleWrap(node, pre) {
      const parent = pre.parentNode;
      if (!parent) return;
      if (parent.classList.contains('example-wrap')) {
        return skipExampleWrap(node, parent);
      }
      parent.insertBefore(node, pre.nextSibling);
      pre.style.display = 'none';
    }
    document.querySelectorAll('pre[class="language-typm-render"]').forEach(pre => {
      const code = pre.querySelector('code');
      if (code) {
        const content = code.textContent;
        renderMarkup(`$ ${content} $`, true).then(svg => {
          skipExampleWrap(createElem(svg, true), pre);
        });
      }
    });
    document.querySelectorAll('pre[class="language-typ-render"]').forEach(pre => {
      const code = pre.querySelector('code');
      if (code) {
        const content = code.textContent;
        renderMarkup(content, true).then(svg => {
          skipExampleWrap(createElem(svg, true), pre);
        });
      }
    });
  });
</script>